Rotation control motor
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United States of America Patent
Stats
-
Aug 11, 2009
Grant Date -
Oct 26, 2006
app pub date -
Apr 21, 2006
filing date -
Apr 26, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rotation control motor comprises a shaft, an armature having an armature core of which teeth are wound by wires to form coils, a commutator, and a field magnet. The armature core has a plurality of teeth, the commutator has a plurality of commutator segments corresponding to the number of teeth, and the coils comprise a normal coil and a brake coil. When the motor rotates faster than expected, the brake coil brakes the motor by magnetic flux, and the motor can rotate within a stable speed range.
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